Crop Yield


DEFINITION of 'Crop Yield '

A measurement of the amount of a crop that was harvested per unit of land area. Crop yield is the measurement often used for a cereal, grain or legume and is normally measured in metric tons per hectare (or kilograms per hectare).

Crop yield can also refer to the actual seed generation from the plant. For example, a grain of wheat yielding three new grains of wheat would have a crop yield of 1:3.

It is also referred to as "agricultural output."


To estimate the crop yield, producers usually count the amount of a given crop harvested in a sample area. The harvested crop is then weighed, and the crop yield of the entire field is extrapolated from the sample.

For example, if a wheat producer counted 30 heads per foot squared, and each head contained 24 seeds, and assuming a 1,000 kernel weight of 35 grams, the crop yield estimate using the standard formula would be: 30 X 24 X 35 X 0.04356 = 1097 kg/acre. And since wheat is 27.215 kg/bu, the yield we estimated would be 40 bu/ac (1097/27.215).

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